Finding the Third Proportional to 345,012.50 and 742,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,012.50 : 742,513.50 = 742,513.50 : x
2. Step 2: Convert to fraction form
   345,012.50/742,513.50 = 742,513.50/x
3. Step 3: Cross multiply
   345,012.50x = 742,513.50 × 742,513.50
4. Step 4: Simplify right side
   345,012.50x = 551,326,297,682.25
5. Step 5: Solve for x
   x = 551,326,297,682.25/345,012.50
6. Step 6: Final answer
   x = 1,597,989.34